Re: Flyback Driver PCBs

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Malcolm Watts" <m.j.watts-at-massey.ac.nz> 

On 13 Apr 2004, at 18:01, Tesla list wrote:

 > Original poster: "Jim Mitchell" <electrontube-at-sbcglobal-dot-net>
 >
 > WHAT!? Kreso thats 6 & 1/2" arcs from a plasma globe flyback?! Those
 > things are tiny 1" cubes that go up in flames if you try to get more
 > then a few kV out of them!
 >   Strangely I am suspicious.  Do you have pictures?
 >
 > Regards - Jim Mitchell

I can't say I am. As usual, power is the driver behind long arcs.
Another example of a strong power dependency is an arc welder. The
voltage is low by any standards but the available power allows one to
draw arcs out over a foot long. Then there is that video of a
switchyard breaker opening, courtesy of Bert Hickman......

Malcolm

 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Tuesday, April 13, 2004 9:51 AM
 > Subject: Re: Flyback Driver PCBs
 >
 >
 >  > Original poster: Kreso Bukvic <kreso.bukvic-at-kc.htnet.hr>
 >  >
 >  > Now for me to spit somthing. I had gotten from small cheap
 >  commercial
 > plasma
 >  > globe flyback ~ 17 cm flaming arc. I was just keeping this for me
 >  but il > give the word out. I was driving this flyback from PC SMPS
 >  so i thinked
 > why
 >  > we all use  LV output of this small transformer? So i connected my
 >  flyback > primary to primary of the transformer i gues there was
 >  arround 300 VDC.
 > The
 >  > flyback gaved 5 - 6 cm arcs now. After some head scratching i
 >  realised
 > that
 >  > SMPS transformer eated alot of power so i remowed it. After
 >  turrning on i > realised thet the flyback is giving small arcs to air
 >  (like Tesla coil). > Trying to pul an arc i realised it can make ~ 17
 >  cm flaming arcs. I was > impressed . So i tried to connect big DC
 >  flyback there and tried to pull a > spark at point of ~8 cm the
 >  corona appeared but as soon the spark created > the mosfets blew i
 >  think that wasn ot problem a wire hanged and shorted
 > the
 >  > output. I never tried this experiment later ( need to build a
 >  sstc.) > > I know all will call me a layer and wont bolive me, but
 >  try it im NOT
 > lying
 >  >
 >  > The picture of the flyback can be seen here
 >  > http://www.allthingstesla-dot-com/viewthread.php?tid=766&page=#pid6060
 >  > > BTW the SMPS was AT 200 W > > Best Regards > > Kreso Bukvic > >
 >
 >
 >